CN101586952B - Hole diameter detection apparatus and method - Google Patents

Hole diameter detection apparatus and method Download PDF

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Publication number
CN101586952B
CN101586952B CN2009101333909A CN200910133390A CN101586952B CN 101586952 B CN101586952 B CN 101586952B CN 2009101333909 A CN2009101333909 A CN 2009101333909A CN 200910133390 A CN200910133390 A CN 200910133390A CN 101586952 B CN101586952 B CN 101586952B
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China
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sensor
measurement axis
bearing
measurement
limit
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CN2009101333909A
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Chinese (zh)
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CN101586952A (en
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王乃明
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王乃明
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Abstract

The invention embodiment provides a hole diameter detection apparatus and method. An embodiment of hole diameter detection apparatus comprises: a transmission part including a cylinder fixed on a cylinder fixing block for providing telescopic motion along the measurement shaft, and a coupling shaft connected with the cylinder and a fastening coupling block connected with the coupling shaft; an induction part including a sensor fixing bar fixed on the fastening coupling block, two sensors mounted on the top of the sensor fixing bar on adjustable positions, a spring shielding sheet mounted underthe lower sensor, and a spring disposed between the spring shielding sheet and the limiting block in the measurement part; a measurement part including a limiting block, a measurement shaft guide rod fixed on the limiting block, and a measurement shaft which is connected with the measurement shaft guide rod and has a convergent lower end and a round cross section; and a base used for fixing beari ng workpiece for measuring. The invention embodiment improves the stability and reliability of the hole diameter measurement, and reduces production cost.

Description

A kind of hole diameter detection apparatus and method
Technical field
The present invention relates to field of measuring technique, relate in particular to a kind of hole diameter detection apparatus and method.
Background technology
Bearing is the very high standard component of versatility, in our life all the time not using bearing, such as bicycle, automobile, chair, desk, bearing all will be used in rotation and the place of sliding.
Bearing is a standard component, very high accuracy requirement is arranged and versatility requirement is installed for size, and external diameter, internal diameter, thickness, play, survey shake etc. all are essential items for inspection, and wherein the detection of internal diameter is even more important.
In the manufacture process of bearing, unavoidably can produce internal diameter defective products bigger than normal or less than normal, flow out in order to prevent defective products, the general at present method that adopts artificial feeler gauge to detect detects bearing bore diameter.But manually when carrying out the feeler gauge detection, its mensuration power is wayward, the False Rate height; And feeler gauge detects needs the special messenger to operate, the production cost height.
As can be seen from the above, artificial feeler gauge of the prior art detects False Rate height and production cost height.
Summary of the invention
The purpose of the embodiment of the invention provides a kind of hole diameter detection apparatus and method, so that make that inside diameter measurement is more reliable and more stable and reduce production costs.
For solving the problems of the technologies described above, the embodiment of the invention provides a hole diameter detection apparatus and method to be achieved in that
A kind of hole diameter detection apparatus comprises:
Running part comprises: be fixedly installed in the cylinder on the cylinder fixed block, coupling spindle that is connected with described cylinder and the tightening link block that is connected with described coupling spindle, described cylinder provide the stretching motion on axially of measurement axis in the measure portion;
The sensing part, comprise: be fixedly installed in the sensor fixed bar on the described tightening link block, the adjustable first sensor in installation site, upper end and second sensor of described sensor fixed bar, second sensor is positioned at the below of first sensor, the below mounting spring catch of described second sensor is provided with spring between the limited block in described spring stop piece and the measure portion;
Measure portion comprises: limited block, the measurement axis that is fixedly installed in the measurement axis guide pole on the described limited block and is connected with described measurement axis guide pole; Its axially downward convergent of the lower end edge of described measurement axis and its xsect are circular;
Base is used for fixing bearing workpiece to be measured.
Preferably, in the described device, described measurement axis comprises upper end, middle-end and lower end, and described upper end and described middle-end are right cylinder, and described lower end is the frustum of a cone.
Preferably, in the described device, described measurement axis guide pole comprised with being connected of described measurement axis:
The upper end of described measurement axis has external thread, and the lower end of described measurement axis guide pole has and the suitable internal thread of the external thread of described measurement axis;
Described measurement axis guide pole is threaded with described measurement axis.
Preferably, in the described device, the dimensional tolerance range of the lower end diameter of described measurement axis is the 0-2 micron, and the circularity of the lower end of described measurement axis is not more than 1.5 microns.
Preferably, in the described device, the dimensional tolerance range of the lower end diameter of described measurement axis comprises for the 0-2 micron:
The high limit of size of the upper surface diameter of described measurement axis lower end is A+0.001mm, and lower limit is A-0.001mm, and wherein A is the basic size of bearing aperture.
Preferably, in the described device, the dimensional tolerance range of the lower end diameter of described measurement axis comprises for the 0-2 micron:
The high limit of size of the bottom surface diameter of described measurement axis lower end is A-0.007mm, and lower limit is A-0.009mm, and wherein A is the basic size of bearing aperture.
Preferably, in the described device, the upper surface of described measurement axis guide pole is not less than plane, described spring stop piece place.
Preferably, in the described device, fixed installation first linear bearing on the described tightening link block, described measurement axis guide pole is installed on the described tightening link block by described first linear bearing.
Preferably, in the described device, described first linear bearing and the second linear bearing socket, described second linear bearing is fixedly installed on the main fixed head, between described main fixed head and the described cylinder fixed block upper support piece is set, the lower end of described main fixed head is provided with the lower support piece.
Preferably, in the described device, described base comprises:
Worktable, be arranged at guide rail and the fixed block on the described worktable and be arranged at bearing briquetting on the guide rail, described fixed block and the fixed installation of described lower support piece, described bearing briquetting is used for fixing the bearing workpiece.
Preferably, in the described device, described two sensors are connected with the input end of the Programmable Logic Controller of greasing gland machine, and the output terminal of the Programmable Logic Controller of described greasing gland machine is connected with the power of electromagnetic valve line of described cylinder.
A kind of aperture detection method is applied to above-mentioned hole diameter detection apparatus, comprising:
Determine to measure the upper and lower limit position according to bearing standard spare, the position of the corresponding first sensor of described measurement upper limit position, the position of corresponding second sensor in described measurement lower limit position, described second sensor is positioned at the below of first sensor;
The bearing workpiece enters the measurement station, cylinder presses down, downforce is passed to spring, described spring acts on spring force on the measurement axis, the effect that described measurement axis is measured power presses down the execution detection of the described bearing workpiece of insertion aperture, the position of the upper surface of the first sensor and the second sensor measurement axis guide pole;
Judge the aperture situation of described bearing workpiece according to the bright situation of lamp on the first sensor and second sensor, if lamp is bright on second sensor, lamp does not work then that bearing workpiece aperture is a non-defective unit on the first sensor; If lamp is all bright then described bearing workpiece aperture is little on the first sensor and second sensor; If lamp does not all work then described bearing workpiece aperture is big on the first sensor and second sensor.
Preferably, in the described method, the high limit of size of described bearing standard spare is A, and lower limit is A-0.007mm, and wherein A is the basic size of bearing aperture.
Preferably, in the described method, describedly determine to measure the upper and lower limit position according to bearing standard spare and comprise:
To described lower limit is that the bearing standard spare of A-0.007mm is measured, and measurement axis descends position that measurement axis guide pole upper surface, back stops for measuring upper limit position, the position of correspondence when adjusting the first sensor position lamp is bright to first sensor;
To the described high limit of size is that the bearing standard spare of A is measured, and the measurement axis position that measurement axis guide pole upper surface, back stops that descends is the measurement lower limit position, adjusts the position of correspondence when lamp is bright on second sensing station to the second sensor.
The technical scheme that is provided by the above embodiment of the invention as seen, the embodiment of the invention is carrying out no longer adopting artificial feeler gauge to detect when bearing aperture detects, make that the measurement of bearing workpiece is more reliable and more stable and do not need to arrange special personnel to detect, reduced production cost.
Description of drawings
Fig. 1 is the cross-sectional schematic of the hole diameter detection apparatus that provides of the embodiment of the invention;
Fig. 2 is the cross-sectional schematic of the measurement axis that provides of the embodiment of the invention;
Fig. 3 is the process flow diagram of the aperture detection method that provides of the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of hole diameter detection apparatus and method.
In order to make those skilled in the art person understand the present invention program better, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills should belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Please refer to Fig. 1, the decomposition cross-sectional schematic of the hole diameter detection apparatus that Fig. 1 provides for the embodiment of the invention.
Cylinder 9 is fixedly installed on the cylinder fixed block 10, cylinder fixed block 10 is positioned at the upper end of upper support piece 12, has coupling spindle 11 on the upper support piece 12, the promotion piston of cylinder 9 passes cylinder fixed block 10 and is connected with tightening link block 7 by coupling spindle 11, and cylinder 9 provides measurement axis 22 axial stretching motion.
Sensor 1 and sensor 2 are installed on the upper end of sensor fixed bar 5 up and down side by side, and sensor 1 and the position of sensor 2 on sensor fixed bar 5 can adjust accordingly; The below of sensor 2 is equipped with spring stop piece 3, between spring stop piece 3 and the limited block 6 spring 4 is installed; The lower end of sensor fixed bar 5 is installed on the tightening link block 7 by screw retention; Linear bearing 15 is connected on the tightening link block 7 by screw lock.
Measurement axis guide pole 8 and limited block 6 are connected by screw lock, and measurement axis guide pole 8 is connected with measurement axis 22 by linear bearing 15.Wherein, 6 of limited blocks are connected with measurement axis guide pole 8 with spring 4, are not connected with miscellaneous part.The upper end of measurement axis 22 has external thread, and the lower end of measurement axis guide pole 8 has the internal thread suitable with measurement axis 22, is threaded between measurement axis 22 and the measurement axis guide pole 8.The position of the upper surface of measurement axis guide pole 8 is not less than the plane at spring stop piece 3 places; When normally measuring the bearing workpiece,, judge that then the aperture of bearing workpiece is little if the upper surface of measurement axis guide pole 8 falls into regional a; If the upper surface of measurement axis guide pole 8 falls into regional b, judge that then bearing workpiece aperture is a non-defective unit; If the upper surface of measurement axis guide pole 8 falls into regional c, judge that then the aperture of bearing workpiece is big.
Measurement axis 22 has predetermined tapering, and measurement axis 22 can be the frustum of a cone, and the length of measurement axis 22 depends on the bearing specification that enterprise produces.The dimensional tolerance range of measurement axis 22 is 0-2 μ m, and its circularity is not more than 1.5 μ m.
Linear bearing 15 is socketed in the linear bearing 14, and linear bearing 14 is fixedly installed on the main fixed head 13, fixed installation upper support piece 12 on the main fixed head 13, and main fixed head 13 is supported by lower support piece 18.
The embodiment of the invention also has a base, base comprises worktable 21, is installed with guide rail 17 and fixed head 20 on the worktable 21, and bearing briquetting 19 is installed on the guide rail 17, bearing briquetting 19 is arranged to the outstanding structure of front end, detects so that outshot is pushed down bearing workpiece 16.
Please refer to Fig. 2, the cross-sectional schematic of a specific embodiment of the measurement axis that Fig. 2 provides for the embodiment of the invention.
Measurement axis is divided E, F and G three parts, and E, F and G three parts are upper end, middle-end and the lower end of corresponding measurement axis respectively.Preferably, the E of measurement axis and F two parts are right cylinder, the E partial-length is 8mm, the F partial-length is 6mm, and the two-part roughness of E and F is 0.8 μ, and E can be identical with the two-part diameter of F, be limited to 3.99mm on the two-part diameter dimension tolerance of E and F, the following 3.98mm that is limited to of dimensional tolerence, E partly has external thread, and F partly has shiny surface; The G of measurement axis partly is the frustum of a cone, its length is 26mm, its roughness is 0.2 μ, its circularity is not more than 1.5 μ m, its diameter is greater than the F part of measurement axis, G section diameter dimensional tolerance range is 0-2 μ m, and the correlation parameter of above measurement axis G part is used for guaranteeing being blocked the detection that realizes bearing workpiece aperture by the bearing workpiece when G of measurement axis partly inserts the bearing workpiece degree of depth.
Wherein can also increase the barrel portion that length is 10mm between measurement axis F and the G part, its diameter is greater than the F part of measurement axis, and its roughness can be 0.2 μ, and its circularity can be not more than 1.5 μ m, and its diameter dimension margin tolerance is 0-2 μ m.
Concrete, the upper limit of the upper surface diameter dimension of measurement axis G part can be A+0.001mm, and the lower limit of upper surface diameter dimension can be A-0.001mm, and wherein A is the basic size in the aperture of bearing standard spare, the specification difference of bearing, the value of A are also corresponding different; Be limited on the bottom surface diameter dimension of the G of measurement axis part and can be A-0.007mm, the lower limit of bottom surface diameter dimension can be A-0.009mm, and wherein A is the basic size in the aperture of bearing standard spare, and the specification difference of bearing, the value of A are also corresponding different.
Sensor 1 and sensor 2 were adjusted sensor 1 and the position of sensor 2 on sensor fixed bar 5 according to the mensuration of bearing standard spare earlier before the normal measurement of carrying out production line head bearing workpiece.
The aperture basic size of supposing bearing standard spare is A, is A according to the high limit of size of company standard bearing aperture, and lower limit is A-0.007mm, and the bearing of making aperture size respectively and be the upper and lower limit size is as measuring the bearing standard spare that upper and lower limit is set.But enterprise is in the actual production line of bearing standard spare is made, and produced standard rolling bearing aperture has a particular range, for example is A-0.001mm to A-0.006mm.
When measuring upper limit setting, getting the bearing standard spare that is of a size of A-0.007mm measures, stop place, measurement axis guide pole 8 upper surface was exactly the position of measuring the upper limit after measurement axis 22 descended, adjust sensor 1, make sensor 1 can just sense the position of measurement axis guide pole 8 upper surfaces, LED lamp on the sensor 1 is bright at this moment, and this moment, sensor 1 adjusted position was exactly the position of measuring the upper limit; When measurement lower limit is set, getting the bearing standard spare that is of a size of A measures, stop place, measurement axis guide pole 8 upper surface was exactly the position of measurement lower limit after measurement axis 22 descended, adjust sensor 2, make sensor 2 can just sense the position of measurement axis guide pole 8 upper surfaces, LED lamp on the sensor 2 is bright at this moment, this moment, sensor 2 adjusted positions were exactly the position of measurement lower limit, after the set positions of measurement upper and lower limit was good, the position of sensor 1 and sensor 2 no longer changed the position in the measuring process of this production line head bearing workpiece.
It is optimum embodiment that the embodiment of the invention adopts the position of the upper surface of sensor measurement measurement axis guide pole, also can adopt pneumatic gauging or inductance measurement to replace sensor measurement to realize the embodiment of the invention, but pneumatic gauging and inductance measurement require very high to environment for use and cost is high, is not suitable for enterprise and makes on-the-spot the use.
When bearing workpiece 16 enters the measurement station, bearing briquetting 19 solid bearing workpiece 16, cylinder 9 presses down, the promotion piston of cylinder 9 drives coupling spindle 11 presses down tightening link block 7, and tightening link block 7 links into an integrated entity by the screw deflation with sensor fixed bar 5 and linear bearing 15, so also can press down together; When pressing down because the existence of spring stop piece 3 and limited block 6, the spring 4 that is connected between spring stop piece 3 and the limited block 6 is compressed, spring 4 is passed to limited block 6 with elastic force, limited block 6 is connected with 8 lockings of measurement axis guide pole, presses down the 16 execution apertures detections of measurement axis 22 insertion bearing workpiece on effect of mensuration power and the measurement axis 22 so spring force changes into.Because measurement axis 22 has tapering, so measurement axis 22 can be because the degree of depth difference that the difference of aperture size size enters measurement axis 22, thereby form the height difference of measurement axis guide pole 8 upper surfaces, sensor 1 and sensor 2 detect the upper surface of measurement axis guide pole, judge the aperture situation of bearing workpiece 16 by the bright situation of the LED lamp on sensor 1 and the sensor 2.
Described mensuration power is made up of two parts, and the one, the gravity G of several parts such as measurement axis 22, measurement axis guide pole 8, G is a definite value; Another is the elastic force Fx that produces behind spring 4 pressurizeds, so because the decrement of spring 4 can be adjusted elastic force Fx variable size, the size of measuring power realizes by the regulating spring decrement.The computing formula of mensuration power is as follows:
Mensuration power=G (definite value)+Fx (variable)
The mensuration power of the hole diameter detection apparatus that the embodiment of the invention the provides artificial feeler gauge mensuration power when detecting of comparing is easy to control, and False Rate reduces.
If the LED lamp of sensor 1 and sensor 2 is all bright, the upper surface of measurement axis guide pole 8 falls into regional a at this moment, judges that the aperture of bearing workpiece 16 is little; If the LED lamp of sensor 1 does not work, the LED lamp of sensor 2 is bright, and the b zone among Fig. 1 is dropped in the upper surface of measurement axis guide pole 8 at this moment, judges that the aperture of bearing workpiece 16 is a non-defective unit; If the LED lamp of sensor 1 and sensor 2 does not all work, the upper surface of measurement axis guide pole 8 falls into regional c at this moment, judges that the aperture of bearing workpiece 16 is big.Big or aperture, aperture is little, and all to belong to the aperture unusual, do not meet the bearing aperture specification requirement.
The hole diameter detection apparatus that the embodiment of the invention provides can be installed on the front end of automatic greasing gland machine on production line, the sensor 1 of hole diameter detection apparatus is connected the input end of the Programmable Logic Controller of automatic greasing gland machine with sensor 2, the output terminal of the Programmable Logic Controller of greasing gland machine is connected with the power of electromagnetic valve line of cylinder 9.The control aspect utilizes the idle input and output point of the Programmable Logic Controller of automatic greasing gland machine, modification by program combines hole diameter detection apparatus and the automatic greasing gland machine that the embodiment of the invention provides together, expanded the function of automatic greasing gland machine, can make the automatic greasing gland facility be equipped with the function that detects bearing aperture automatically.
(" ON " indication lamp is bright with the logical signal of LED lamp for the sensor 1 of hole diameter detection apparatus and sensor 2, " OFF " indication lamp does not work) Programmable Logic Controller of input automatic greasing gland machine, the Programmable Logic Controller of automatic greasing gland machine sends action command according to program, carries out the corresponding actions instruction by hole diameter detection apparatus.
The hole diameter detection apparatus that the embodiment of the invention provides is used for the bearing manufacturing line, has replaced conventional artificial feeler gauge to detect to the detection of bearing aperture, measures more reliable and more stablely, and False Rate is zero under the situation that detects unworn bearing; Do not need to arrange the professional to detect, reduced production cost; Can make product moving by linear flow, the problem of finding out immediately when the distribution aperture is unusual in batches, helps accuracy and promptness that quality problem is reviewed.
It is more simple and reliable that the hole diameter detection apparatus that the embodiment of the invention provides is compared the sampling observation of Laboratory Instruments, and production cost reduces, and meets the enterprise practical situation.
The hole diameter detection apparatus that the embodiment of the invention provides can also be used for the aperture inner wall roughness less than 0.8 μ, the detection in the aperture of the even parts in aperture.
The process flow diagram of the aperture detection method that Fig. 3 provides for the embodiment of the invention, the aperture detection method is applied to the hole diameter detection apparatus that the invention described above embodiment provides, and as shown in Figure 3, comprising:
S301: determine to measure upper and lower limit position, described measurement upper limit position respective sensor 1 position, respective sensor 2 positions, described measurement lower limit position according to bearing standard spare;
The high limit of size of described bearing standard spare is A, and lower limit is A-0.007mm, and wherein A is the basic size of bearing aperture.
Describedly determine to measure the upper and lower limit position according to bearing standard spare and comprise:
To described lower limit is that the bearing standard spare of A-0.007mm is measured, and measurement axis 22 descends position that measurement axis guide pole 8 upper surfaces, back stop for measuring upper limit position, the position of correspondence when adjusting sensor 1 position lamp is bright to sensor 1;
To the described high limit of size is that the bearing standard spare of A is measured, and measurement axis 22 position that measurement axis guide pole 8 upper surfaces, back stop that descends is the measurement lower limit position, the position of correspondence when adjusting sensor 2 positions lamp is bright to sensor 2.
S302: bearing workpiece 16 enters the measurement station, cylinder 9 presses down, downforce is passed to spring 4, spring 4 acts on spring force on the measurement axis 22, the effect that measurement axis 22 is measured power presses down insertion bearing workpiece 16 internal diameters execution detection, and sensor 1 and sensor 2 detect the position of the upper surface of measurement axis guide poles 8;
When bearing workpiece 16 enters the measurement station, bearing briquetting 19 solid bearing workpiece 16, cylinder 9 presses down, the promotion piston of cylinder 9 drives coupling spindle 11 presses down tightening link block 7, and tightening link block 7 links into an integrated entity by the screw deflation with sensor fixed bar 5 and linear bearing 15, so also can press down together; When pressing down because the existence of spring stop piece 3 and limited block 6, the spring 4 that is connected between spring stop piece 3 and the limited block 6 is compressed, spring 4 is passed to limited block 6 with elastic force, limited block 6 is connected with 8 lockings of measurement axis guide pole, is used for pressing down on the measurement axis 22 the 16 execution apertures detections of measurement axis 22 insertion bearing workpiece so spring force changes into the mensuration masterpiece.Because measurement axis 22 has tapering, so measurement axis 22 can be because the degree of depth difference that the difference of aperture size size enters measurement axis 22, thereby form the height difference of measurement axis guide pole 8 upper surfaces, sensor 1 and sensor 2 detect the upper surface of measurement axis guide pole 8, judge the aperture situation of bearing workpiece 16 by the bright situation of the LED lamp on sensor 1 and the sensor 2.
Described mensuration power is made up of two parts, and the one, the gravity G of several parts such as measurement axis 22, measurement axis guide pole 8, G is a definite value; Another is the elastic force Fx that produces behind spring 4 pressurizeds, so because the decrement of spring 4 can be adjusted elastic force Fx variable size, the size of measuring power realizes by the regulating spring decrement.The computing formula of mensuration power is as follows:
Mensuration power=G (definite value)+Fx (variable)
S303: judge the aperture situation of bearing workpiece 16 according to the bright situation of lamp on sensor 1 and the sensor 2, if lamp is bright on the sensor 2, lamp does not work then that the bearing workpiece is a non-defective unit on the sensor 1; If lamp is all bright then bearing workpiece aperture is little on sensor 1 and the sensor 2; If lamp does not all work then bearing workpiece aperture is big on sensor 1 and the sensor 2.
Big or aperture, aperture is little all to be the unusual situation in aperture.
Compare artificial feeler gauge of the aperture detection method that the embodiment of the invention provides detects, and is more reliable and more stable and do not need to arrange special personnel to detect, and reduced production cost; And can make product moving by linear flow, the problem of finding out immediately when the distribution aperture is unusual in batches, helps accuracy and promptness that quality problem is reviewed.
Above-described embodiment of the present invention does not constitute the qualification to protection domain of the present invention.Any modification of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the claim protection domain of the present invention.

Claims (14)

1. a hole diameter detection apparatus is characterized in that, comprising:
Running part comprises: be fixedly installed in the cylinder on the cylinder fixed block, coupling spindle that is connected with described cylinder and the tightening link block that is connected with described coupling spindle, described cylinder provide the stretching motion on axially of measurement axis in the measure portion;
The sensing part, comprise: be fixedly installed in the sensor fixed bar on the described tightening link block, the adjustable first sensor in installation site, upper end and second sensor of described sensor fixed bar, second sensor is positioned at the below of first sensor, the below mounting spring catch of described second sensor is provided with spring between the limited block in described spring stop piece and the measure portion;
Measure portion comprises: limited block, the measurement axis that is fixedly installed in the measurement axis guide pole on the described limited block and is connected with described measurement axis guide pole, and its axially downward convergent of the lower end edge of described measurement axis and its xsect are circular;
Base is used for fixing bearing workpiece to be measured.
2. inside diameter measurement device according to claim 1 is characterized in that, described measurement axis comprises upper end, middle-end and lower end, and described upper end and described middle-end are right cylinder, and described lower end is the frustum of a cone.
3. hole diameter detection apparatus according to claim 2 is characterized in that, described measurement axis guide pole comprised with being connected of described measurement axis:
The upper end of described measurement axis has external thread, and the lower end of described measurement axis guide pole has and the suitable internal thread of the external thread of described measurement axis;
Described measurement axis guide pole is threaded with described measurement axis.
4. according to claim 2 or 3 described inside diameter measurement devices, it is characterized in that the dimensional tolerance range of the lower end diameter of described measurement axis is the 0-2 micron, the circularity of the lower end of described measurement axis is not more than 1.5 microns.
5. hole diameter detection apparatus according to claim 4 is characterized in that, the dimensional tolerance range of the lower end diameter of described measurement axis comprises for the 0-2 micron:
The high limit of size of the upper surface diameter of described measurement axis lower end is A+0.001mm, and lower limit is A-0.001mm, and wherein A is the basic size of bearing aperture.
6. inside diameter measurement device according to claim 4 is characterized in that, the dimensional tolerance range of the lower end diameter of described measurement axis comprises for the 0-2 micron:
The high limit of size of the bottom surface diameter of described measurement axis lower end is A-0.007mm, and lower limit is A-0.009mm, and wherein A is the basic size of bearing aperture.
7. inside diameter measurement device according to claim 1 is characterized in that, the upper surface of described measurement axis guide pole is not less than plane, described spring stop piece place.
8. hole diameter detection apparatus according to claim 1 is characterized in that, fixed installation first linear bearing on the described tightening link block, and described measurement axis guide pole is installed on the described tightening link block by described first linear bearing.
9. hole diameter detection apparatus according to claim 8, it is characterized in that, described first linear bearing and the second linear bearing socket, described second linear bearing is fixedly installed on the main fixed head, between described main fixed head and the described cylinder fixed block upper support piece is set, the lower end of described main fixed head is provided with the lower support piece.
10. inside diameter measurement device according to claim 9 is characterized in that, described base comprises:
Worktable, be arranged at guide rail and the fixed block on the described worktable and be arranged at bearing briquetting on the guide rail, described fixed block and the fixed installation of described lower support piece, described bearing briquetting is used for fixing the bearing workpiece.
11. inside diameter measurement device according to claim 1, it is characterized in that, described two sensors are connected with the input end of the Programmable Logic Controller of greasing gland machine, and the output terminal of the Programmable Logic Controller of described greasing gland machine is connected with the power of electromagnetic valve line of described cylinder.
12. an aperture detection method is applied to the described hole diameter detection apparatus of claim 1, it is characterized in that, comprising:
Determine to measure the upper and lower limit position according to bearing standard spare, the position of the corresponding first sensor of described measurement upper limit position, the position of corresponding second sensor in described measurement lower limit position, described second sensor is positioned at the below of first sensor;
The bearing workpiece enters the measurement station, cylinder presses down, downforce is passed to spring, described spring acts on spring force on the measurement axis, the effect that described measurement axis is measured power presses down the execution detection of the described bearing workpiece of insertion aperture, the position of the upper surface of the first sensor and the second sensor measurement axis guide pole;
Judge the aperture situation of described bearing workpiece according to the bright situation of lamp on the first sensor and second sensor, if lamp is bright on second sensor, lamp does not work then that bearing workpiece aperture is a non-defective unit on the first sensor; If lamp is all bright then described bearing workpiece aperture is little on the first sensor and second sensor; If lamp does not all work then described bearing workpiece aperture is big on the first sensor and second sensor.
13. aperture according to claim 12 detection method is characterized in that, the high limit of size of described bearing standard spare is A, and lower limit is A-0.007mm, and wherein A is the basic size of bearing aperture.
14. aperture according to claim 13 detection method is characterized in that, describedly determine to measure the upper and lower limit position according to bearing standard spare and comprises:
To described lower limit is that the bearing standard spare of A-0.007mm is measured, and measurement axis descends position that measurement axis guide pole upper surface, back stops for measuring upper limit position, the position of correspondence when adjusting the first sensor position lamp is bright to first sensor;
To the described high limit of size is that the bearing standard spare of A is measured, and the measurement axis position that measurement axis guide pole upper surface, back stops that descends is the measurement lower limit position, adjusts the position of correspondence when lamp is bright on second sensing station to the second sensor.
CN2009101333909A 2009-04-07 2009-04-07 Hole diameter detection apparatus and method CN101586952B (en)

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